Annealing device



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JLAEENQE E. PYLE, O1 PHILADELPHIA, PENNSYLVANIA, AS$IGNOR TO THE S. S.

- wnrrn DENTAL manuracrnmrie ETANIA. i

inflates.

' Application filed June 23,

cation, reference being had to the accompanying drawings.

y invention relates particularly to that class of annealing devices which comprises a tray for supporting articles to be annealed or tempered, and that may be readily inserted and withdrawn from a flame or a furnace.

The principal objects of my invention are to provide an annealing tray with means for confining the heat about the articles supported thereon, and to provide said tray with a handle by which it may be conveniently manipulated.

Other objects of my invention are to provide an annealing tray with an article-containing chamber having a closure automatically held in closed position to exclude air currents from articles thereon supported, but being readily opened to afford access thereto.

My invention further compreh'ends an annealing tray provided with a transparent cover to afford free vision of the articles thereon contained.

Specifically stated, the form of my invention as hereinafter described, comprises an annealing tray having a supporting handle and a cover having a transparent window forming a closure for said tray carried by a lever pivoted to said handle ,and spring pressed to effect the closure of said cover upon said tray to provide a closed chamber.

My invention also includes all of the various novel features of construction and arrangement as hereinafter more definitely specified.

In the accompanying drawings, Figure 1 is a perspective view ofan annealing tray constructed in accordance with my invention; Fig. 2 is a sectional side elevational View of the tray illustrated in Figure 1, the tray and its'cover being shown in longitudinal section for convenience of illustration; and Fig. 3 is a side elevational view of the tray illustrated in Figs. 1 and-2 showing the cover in its open position.

In said figures, the tray comprises. the plate 1, preferably formed 6f sheet metal and Specification of Letters Patent.

COMPANY, A COEPORATION OF PENNSY ANNEALING DEVICE.

1920. Serial No. 391,151.

t The plate 1 of the tray is provided with a' lid or cover 10 having the depending side and end walls 11 and 12, respectively, and being mounted upon a lever 13 having the thumb-piece 14:, and arranged to be moved toward and from said plate 1 upon the pintle 15, which pivotally connects the lugs 16 on the lever 13 with the shank 3 of the handle 4:, so that the operator while grasping the handle 4 may with his thumb depress the thumb-piece 14 toward said handle and thereby raise the lid or cover 10 from said plate 1, as shown in Fig. 3, to afford access to the articles 20 thereon supported. The

free edge of said lid or cover 10 may be yieldingly pressed into engagement with the plate 1 by means of the-spring 21, which may be disposed between the shank 3 and lever 13, and which tends to force the handle 4 and thethumb-piece 14 apart to effect the relative approach of said cover and plate.

The lid or cover 10 may be conveniently provided with a window opening 23 which may be closed by the transparent sheet of glass, mica,or the like, forming a window pane 25, which as best shown in Fig. 2, may be retained in removable relation therewith by the window frame 26 affording a sliding groove 27 upon three sides of the window opening 23, into which saidwindow pane 25 may slide, the frame 26 being omitted from the fourth side'to permit said window pane 25 to be removed and replaced.

The plate 1 of the tray is preferably provided with feet 29, arranged to support the forward endof the tray, the rearward end being supported by the handle 1 which declines slightly out of the plane of said plate 1, as best shown in Fig. 3. Thus it will be seen that when the tray is supported upon a table or other surface 30, the plate 1 upon which the articles 20 are supported, will be elevated therefrom to permit the air to pass thereunder and thereby hasten the pooling of said plate 1 and articles 20. i

It may be here noted that a tray constructed in accordance with my invention is advantageous in that it may be readily ma- Patented May 2, 1922.

nipulated, and the articles contained therein will not be affected by any surrounding air currents, yet they will be visible to the operator through the transparent, opening, so that he may ascertain the condition of said articles during the various stages or the annealing process.

' I do not desire to limit my invention to the precise details of construction and arrangement as herein specified, as it is obvious that various modifications may be made therein Without departing from the essential features of my invention as defined in the appended claims.

Having thus described my invention, I claim 1. A device'of the class described, comprising a tray having a movable cover forming a closed chamber, and a removable transparent Window in said cover.

2. A device of the class described, comprising a tray having a cover pivoted thereto and forming a closed chamber.

rciapee 3. A device of the class described, comprising a tray having a transparent cover pivoted thereto, and forming a closed cham ber.

i. A device of the'class described, comprising a tray having a supporting handle, and a cover pivoted thereto, and provided With a lever arranged to efi'ect the move-- ment of said-cover with respect to said tray.

5. A device of the class described, comprising a tray having a supporting handle, and a cover pivoted thereto, provided with a lever arranged to effect the movement of said cover Withrespect to said tray, and yielding means tending to maintain said. cover in its closed position.

In Witness whereof, I have hereunto set my hand this 19th day of June, A. D, 1920.

CLARENCE E. PYLE.

Witnesses:

WILLIAM J. ltnssnm, Cmr'roN C. IIAILQMTJLL. 

